CA809749A - Key telephone system signaling circuit - Google Patents

Key telephone system signaling circuit

Info

Publication number
CA809749A
CA809749A CA809749A CA809749DA CA809749A CA 809749 A CA809749 A CA 809749A CA 809749 A CA809749 A CA 809749A CA 809749D A CA809749D A CA 809749DA CA 809749 A CA809749 A CA 809749A
Authority
CA
Canada
Prior art keywords
telephone system
key telephone
signaling circuit
system signaling
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA809749A
Inventor
Joseph C. Lacey, Iii
R. Mceowen James
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA809749A publication Critical patent/CA809749A/en
Expired legal-status Critical Current

Links

CA809749A Key telephone system signaling circuit Expired CA809749A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA809749T

Publications (1)

Publication Number Publication Date
CA809749A true CA809749A (en) 1969-04-01

Family

ID=36280265

Family Applications (1)

Application Number Title Priority Date Filing Date
CA809749A Expired CA809749A (en) Key telephone system signaling circuit

Country Status (1)

Country Link
CA (1) CA809749A (en)

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